18 citations · 19 across the 8 of their papers we have counts for
8 papers
A Multi-Axial Mindset for Ontology Design Lessons from Wikidata's Polyhierarchical Structure
Ege Atacan Doğan, Peter F. Patel-Schneider
Traditional ontology design emphasizes disjoint and exhaustive top-level distinctions such as continuant vs. occurrent, abstract vs. concrete, or type vs. instance. These distincti…
Class Order Disorder in Wikidata and First Fixes
Peter F. Patel-Schneider, Ege Atacan Doğan
Wikidata has a large ontology with classes at several orders. The Wikidata ontology has long been known to have violations of class order and information related to class order tha…
Disjointness Violations in Wikidata
Ege Atacan Doğan, Peter F. Patel-Schneider
Disjointness checks are among the most important constraint checks in a knowledge base and can be used to help detect and correct incorrect statements and internal contradictions.…
Wikidata Constraints on MARS (Extended Technical Report)
David L. Martin, Peter F. Patel-Schneider
Wikidata constraints, albeit useful, are represented and processed in an incomplete, ad hoc fashion. Constraint declarations do not fully express their meaning, and thus do not pro…
ASHACL: Alternative Shapes Constraint Language
Peter F. Patel-Schneider
ASHACL, a variant of the W3C Shapes Constraint Language, is designed to determine whether an RDF graph meets some conditions. These conditions are grouped into shapes, which valida…
Using Description Logics for RDF Constraint Checking and Closed-World Recognition
Peter F. Patel-Schneider
RDF and Description Logics work in an open-world setting where absence of information is not information about absence. Nevertheless, Description Logic axioms can be interpreted in…